A spec sheet of what is suspected to be Porsche limited-edition model of the 911 GT3 RS has leaked on the Internet, and it contains information on what is called Porsche 911 GT3 RS 4.0.

According to the spec sheet, the Porsche 911 GT3 RS 4.0 will be powered by a 4.0L engine making 500 hp and mated to a 6 speed manual transmission. The spec sheet outlines different options for exterior, transmission and chassis, wheels, interior, audio and communications equipments.

This is still unofficial so stay tuned for more updates.

Recap: The 2010 Porsche 911 GT3 RS is powered by a 3.8L making 450 hp at 8,500 rpm. Prices for the Porsche 911 GT3 RS start at $132,800.